SUIMIN KOKYU SHOGAI CLINIC

This is a specialist sleep and breathing disorders clinic attached to the Neurology Research Institute (神経研究所) in Chiyoda. It sits on the second floor of the Horiuchi Misakicho Building near Suidobashi and Jimbocho — not a flashy neighborhood, but well-connected. The focus is narrow and serious: sleep apnea, insomnia, and related breathing issues. This isn’t a general psychiatry clinic that dabbles in sleep problems — it’s the whole point of the place.

The clinic has some English content on its website, which is a good sign, but don’t assume you’ll get a fully English-speaking reception desk. Bring documentation of your symptoms in Japanese if you can, or prepare to use a translation app for paperwork. The staff are likely used to dealing with technical sleep study equipment and clinical results, so the consultation itself may be quite structured and data-driven. If you’ve already done a home sleep test elsewhere and have results to show, bring them. This is a referral-friendly environment where coming prepared will get you much further than showing up cold.